(CNN) — The Sarasota County Medical Examiner and a cadaver dog were called on Wednesday to a Florida park where authorities found several items belonging to Brian Laundrie, the missing fiancé of Gabby Petito.

Laundrie’s parents, Chris and Roberta Laundrie, informed the FBI and the North Port Police Department Tuesday night that they intended to come to the park on Wednesday morning to search for him, family attorney Steven Bertolino said. Law enforcement met them there Wednesday morning, he said.

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After a “brief search” off a trail Laundrie frequented, the family and law enforcement found “some articles” belonging to him, Bertolino said. He would not give any further information on what or how many items were found.

Bertolino said that law enforcement is now conducting a more thorough investigation of that area.

The Sarasota County Medical Examiner has been called to the scene, and Pasco County Sheriff’s office said a cadaver dog and two spotters were also on site. The Sarasota County Sheriff’s Office Emergency Response Team and the Lee County Sheriff’s Office are also now on scene along with a mobile unit and a tent.

North Port Police declined to comment.

The discovery comes amid an exhaustive search for Laundrie that has now stretched over a month and as authorities try to piece together what happened to Petito.

How we got here

Petito, 22, and Laundrie, 23, traveled around the western US in a white van this summer, all while regularly posting photos and stories to their social media pages. Those posts abruptly stopped in late August, though, and Laundrie then returned by himself to their home in North Point, Florida, where they lived with his parents, on September 1.

Petito’s family, unable to get in contact with her, reported her missing 10 days later, launching a national search. Laundrie declined to cooperate with the investigation into her whereabouts, and soon after, he also went missing. His family told investigators they believed he had gone to a sprawling nature reserve nearby.

Petito’s remains were found in a national forest in Wyoming on September 19 near where the couple had last been seen together. Teton County Coroner Dr. Brent Blue ruled her death a homicide and said that she died by strangulation.

“We believe this was strangling by a human being,” Blue told CNN’s Anderson Cooper.

Laundrie has not been explicitly connected to Petito’s homicide, but he is the subject of a federal arrest warrant for unauthorized use of another person’s debit card in the days after Petito last spoke with her family.

Though their social media posts appear idyllic, their relationship was full of tension and conflict in recent months. Petito called her mom regularly, and those conversations appeared to reveal there was “more and more tension” in Petito’s relationship, according to a police affidavit for a search warrant of an external hard drive found in the couple’s van.

In addition, the couple was involved in a domestic dispute and were stopped by police in August in Moab, Utah, after a 911 caller told dispatchers he saw a man hitting a woman, according to audio provided by the Grand County Sheriff’s Office.

In a report from Moab police, another witness told police he saw the couple arguing over a phone. The witness said that when Laundrie got into the van, Petito appeared to hit him in the arm and then climbed through the driver’s side door as if he had locked her out, the report states.

After interviewing Petito, Laundrie and the witness, the officers describe the incident as an argument that turned into a physical fight involving pushing and scratching.

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